138153263 has 8 divisors (see below), whose sum is σ = 140476032. Its totient is φ = 135838296.

The previous prime is 138153217. The next prime is 138153269. The reversal of 138153263 is 362351831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138153263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138153269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41756 + ... + 44942.

It is an arithmetic number, because the mean of its divisors is an integer number (17559504).

Almost surely, 2^138153263 is an apocalyptic number.

138153263 is a deficient number, since it is larger than the sum of its proper divisors (2322769).

138153263 is an equidigital number, since it uses as much as digits as its factorization.

138153263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901.

The product of its digits is 12960, while the sum is 32.

The square root of 138153263 is about 11753.8616207611. The cubic root of 138153263 is about 516.9561610832.

The spelling of 138153263 in words is "one hundred thirty-eight million, one hundred fifty-three thousand, two hundred sixty-three".